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logs.nimbus: leave memory for Lucene, use 32 GB heap 

https://github.com/status-im/infra-nimbus/issues/96

"The moral of the story is this: even when you have memory to spare, try
to avoid crossing the 32 GB heap boundary. It wastes memory, reduces CPU
performance, and makes the GC struggle with large heaps."

https://www.elastic.co/guide/en/elasticsearch/guide/current/heap-sizing.html#compressed_oops
https://www.elastic.co/guide/en/elasticsearch/guide/current/heap-sizing.html#_give_less_than_half_your_memory_to_lucene

Signed-off-by: Jakub Sokołowski <jakub@status.im>
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Jakub Sokołowski 2022-06-01 12:28:48 +02:00
parent 3366cd40ef
commit c474a3311d
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1 changed files with 2 additions and 4 deletions
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ansible/group_vars/logs.nimbus.yml
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@ -37,10 +37,8 @@ es_number_of_shards: 3
es_number_of_replicas: 0
# JVM memory settings
es_jvm_mem_ratio: 0.8
es_jvm_mem: '{{ (ansible_memtotal_mb * es_jvm_mem_ratio) | round(0, "floor") }}'
es_jvm_min_heap: '{{ es_jvm_mem | int }}m'
es_jvm_max_heap: '{{ es_jvm_mem | int }}m'
es_jvm_min_heap: '32g'
es_jvm_max_heap: '32g'
# ElasticSearch HQ
es_hq_cont_enabled: true